Drop door for railway cars



Feb. 9, 1932. A. E. s-MALL 1,844,078

DROP DOR FOR RAILWAY CARS Filed oct. 24, 1929 other port-ions connecting the first inentione/ portions Which are spaced apa-rt from said margins, and ribs radiating from substantially the center of the door Which merge into said main part adj acent said flange.

2. Aldooi forming part vof the load retaining means of a railway car comprising amainpart, a flange having portions adjacent the respective margins of the door andv` other POrtiQns- Connecting the first mentiened: Perry.. tions Which arespaed apart from saidmarf gins, ribs radiating from substantially the center of the door, and other shortenribsra-v diating from the same center as the first inentioned ribs. t i Y Y' 3, .A door forming part of the load retaining means of a railway! car comprising a main part, a flange having portions; adjacent the respeetre. margins 0f the door and @ther portions connecting the. first mentioned portions Which are spaced apart from said .mar-

girls, ribs radiating from substantially the center of the door which merge into j said mainl part adjacent said flange, and other, shorter ribs radiating from the same center the mein part.

4. A door forming part of the load retain-` ing means of a railway car comprising a ,main part,` a flange having portions adjacentv the as the iirst mentioned i'ibs which `merge into "respective margins ofthe door. and other portions connecting the first mentioned portions which are spacedv apart from said Inargins, a central substantially circular' flange,`

u ribs radi/ating from `said'circular flange from which merge into saidm'ain part adjaj,

centsaid' flange.

5.: A door forming partof thefload retain-v Y ing means of a railway car comprising a sub'-` stantially rectangular main part reinforced by a circular rib having portionstouching thev edges of the main part so that the corners thereof extend beyond the rib.

6. A door forming part of thek load retain;A

`ing meansof a railway car comprising a substantially rectangular main part` rein;Y

forcedv by a circulary rib having portions touching the edges of the main` partL so that the corners thereof extend beyond the rib,

first mentionedV rib.

7. A door forming part of the, load retaili-Y ing means vof a railway car comprising a rand an inner circular rib concentric with the substantially rectangular main part reinforced by a circular rib having portions touching the edges of the main part so that the corners thereof extend beyond the rib, and varying depth reinforcements crossing s aid main part and merging thereinto adjacent saidl the edges, of tli/e main' partv so thaty the corners thereof extend beyond the rib, an inner circular rib concentric with the first inentionedrib, and reinforcements springing from the last mentioned circular rib and merging into said main part adjacent the first mentioned rib.

' ARTHUR; E. SMALL.

iso, 

